CA2986980A1 - Display with low voltage feature - Google Patents
Display with low voltage feature Download PDFInfo
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- CA2986980A1 CA2986980A1 CA2986980A CA2986980A CA2986980A1 CA 2986980 A1 CA2986980 A1 CA 2986980A1 CA 2986980 A CA2986980 A CA 2986980A CA 2986980 A CA2986980 A CA 2986980A CA 2986980 A1 CA2986980 A1 CA 2986980A1
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- Canada
- Prior art keywords
- power mode
- display device
- screen
- power
- management circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
- G06F1/3215—Monitoring of peripheral devices
- G06F1/3218—Monitoring of peripheral devices of display devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3265—Power saving in display device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3287—Power saving characterised by the action undertaken by switching off individual functional units in the computer system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
Abstract
In some embodiments, a display device with a power mode switch is provided. If the power mode switch is in a first state, the display device operates in a high power consumption mode in which no limitations are placed on functionality. If the power mode switch is in another state, the display device operates in a low power consumption mode. In some embodiments, the low power consumption mode includes reducing a brightness of a screen of the display device. In some embodiments, the low power consumption mode includes deactivating additional components of the display device. In some embodiments, the display device is powered via a communications port such as a USB port in order to be able to be powered by a video source device.
Description
DISPLAY WITH LOW VOLTAGE FEATURE
SUMMARY
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This summary is not intended to identify key features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In some embodiments, a display device is provided. The display device comprises a communications port, a screen, a power mode management circuit, and a power mode switch.
The communications port is configured to receive power from an external source. The screen is configured to receive power from the communications port. The power mode switch is configured to provide a signal to the power mode management circuit. The power mode management circuit is configured to, in response to detecting that the signal indicates that the power mode switch is in a first state, cause the screen to enter a high power consumption mode. The power mode management circuit is also configured to, in response to detecting that the signal indicates that the power mode switch is in a second state, cause the screen to enter a low power consumption mode.
In some embodiments, a method of controlling power consumption of components of a display device is provided. A power mode management circuit determines a state of a power mode switch of the display device. In response to determining that the power mode switch is in a first state, the power mode management circuit causes a screen of the display device to operate in a high power consumption mode. In response to determining that the power mode switch is in a second state, the power mode management circuit causes the screen to operate in a low power consumption mode.
In some embodiments, a non-transitory computer-readable medium is provided.
The computer-readable medium has computer-executable instructions stored thereon that, in response to execution by a power mode management circuit of a display device, cause the power mode management circuit to control power consumption of components of the display device by: determining, by the power mode management circuit, a state of a power mode switch of the display device; in response to determining that the power mode switch is in a first state, causing, by the power mode management circuit, a screen of the display device to operate in a high power consumption mode; and in response to determining that the power mode switch is in a second state, causing, by the power mode management circuit, the screen to operate in a low power consumption mode.
DESCRIPTION OF THE DRAWINGS
The foregoing aspects and many of the attendant advantages of this invention will become more readily appreciated as the same become better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
FIGURE 1 is a block diagram that illustrates use of an example embodiment of a display device according to various aspects of the present disclosure;
FIGURE 2 is a block diagram that illustrates an example embodiment of a display device according to various aspects of the present disclosure; and FIGURES 3A-3B are a flowchart that illustrates an example embodiment of a method of controlling power consumption of components of a display device according to various aspects of the present disclosure.
DETAILED DESCRIPTION
FIGURE 1 is a block diagram that illustrates use of an example embodiment of a display device according to various aspects of the present disclosure. In general, the display device 100 is suitable for portable use, and in particular, may be designed in such a way as to make it convenient to couple to a video source device 102 as a temporary display. For example, the display device 100 may be particularly suitable for use at a trade show, presentation, or other event in which the display device 100 will be quickly set up to be coupled to a video source device 102 such as a laptop, a game system, and/or the like, and will only temporarily be in place. The video source device 102 may receive power from an
SUMMARY
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This summary is not intended to identify key features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In some embodiments, a display device is provided. The display device comprises a communications port, a screen, a power mode management circuit, and a power mode switch.
The communications port is configured to receive power from an external source. The screen is configured to receive power from the communications port. The power mode switch is configured to provide a signal to the power mode management circuit. The power mode management circuit is configured to, in response to detecting that the signal indicates that the power mode switch is in a first state, cause the screen to enter a high power consumption mode. The power mode management circuit is also configured to, in response to detecting that the signal indicates that the power mode switch is in a second state, cause the screen to enter a low power consumption mode.
In some embodiments, a method of controlling power consumption of components of a display device is provided. A power mode management circuit determines a state of a power mode switch of the display device. In response to determining that the power mode switch is in a first state, the power mode management circuit causes a screen of the display device to operate in a high power consumption mode. In response to determining that the power mode switch is in a second state, the power mode management circuit causes the screen to operate in a low power consumption mode.
In some embodiments, a non-transitory computer-readable medium is provided.
The computer-readable medium has computer-executable instructions stored thereon that, in response to execution by a power mode management circuit of a display device, cause the power mode management circuit to control power consumption of components of the display device by: determining, by the power mode management circuit, a state of a power mode switch of the display device; in response to determining that the power mode switch is in a first state, causing, by the power mode management circuit, a screen of the display device to operate in a high power consumption mode; and in response to determining that the power mode switch is in a second state, causing, by the power mode management circuit, the screen to operate in a low power consumption mode.
DESCRIPTION OF THE DRAWINGS
The foregoing aspects and many of the attendant advantages of this invention will become more readily appreciated as the same become better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
FIGURE 1 is a block diagram that illustrates use of an example embodiment of a display device according to various aspects of the present disclosure;
FIGURE 2 is a block diagram that illustrates an example embodiment of a display device according to various aspects of the present disclosure; and FIGURES 3A-3B are a flowchart that illustrates an example embodiment of a method of controlling power consumption of components of a display device according to various aspects of the present disclosure.
DETAILED DESCRIPTION
FIGURE 1 is a block diagram that illustrates use of an example embodiment of a display device according to various aspects of the present disclosure. In general, the display device 100 is suitable for portable use, and in particular, may be designed in such a way as to make it convenient to couple to a video source device 102 as a temporary display. For example, the display device 100 may be particularly suitable for use at a trade show, presentation, or other event in which the display device 100 will be quickly set up to be coupled to a video source device 102 such as a laptop, a game system, and/or the like, and will only temporarily be in place. The video source device 102 may receive power from an
-2-optional external power source 104, or may operate on a battery contained within the video source device 102.
Due to the temporary and mobile nature of the use of the display device 100, it is desirable to reduce the number of connections between the display device 100 and other devices in order to decrease setup time and increase flexibility, and it is also desirable to reduce the amount of additional components (such as external power supplies, wall warts, and/or the like) that must be carried along with the display device 100.
Accordingly, the display device 100 is configured to be able to receive both power and video information directly from the video source device 102. This eliminates any need for a bulky power connector such as a wall wart or a power brick for the display device 100, and also eliminates the need to couple the display device 100 to an external power source. Being able to obtain both power and video information from the video source device 102 can be particularly beneficial in situations such as traveling on a plane where only a single power outlet is available per passenger, or setting up displays or demos at a trade show where establishing wiring connections to external power sources may be difficult, because the display device 100 will only have to be coupled to the video source device 102 and not also to a separate power source such as a power outlet to be operational.
While using the video source device 102 as the source for power for the display device 100, certain limitations are present. For example, video source devices 102 often provide a specified power capability which can be expected to be provided (e.g., 2A power output +/- 5%). Therefore, the display device 100 could be designed with components that consume the specified available power (e.g., about 2A), and be expected to work reliably.
However, in practice, video source devices 102 may perform out of this specified power capability range, particularly when the video source device 102 has other intermittent drains on its power, or if the video source device 102 is operating on battery power instead of from an external power source 104. If the display device 100 has been designed to require the majority of the specified available power for proper operation, then the display device 100 may experience intermittent failures (e.g., screen blanking, etc.) when the provided power intermittently drops outside of the expected range. At the same time, including additional
Due to the temporary and mobile nature of the use of the display device 100, it is desirable to reduce the number of connections between the display device 100 and other devices in order to decrease setup time and increase flexibility, and it is also desirable to reduce the amount of additional components (such as external power supplies, wall warts, and/or the like) that must be carried along with the display device 100.
Accordingly, the display device 100 is configured to be able to receive both power and video information directly from the video source device 102. This eliminates any need for a bulky power connector such as a wall wart or a power brick for the display device 100, and also eliminates the need to couple the display device 100 to an external power source. Being able to obtain both power and video information from the video source device 102 can be particularly beneficial in situations such as traveling on a plane where only a single power outlet is available per passenger, or setting up displays or demos at a trade show where establishing wiring connections to external power sources may be difficult, because the display device 100 will only have to be coupled to the video source device 102 and not also to a separate power source such as a power outlet to be operational.
While using the video source device 102 as the source for power for the display device 100, certain limitations are present. For example, video source devices 102 often provide a specified power capability which can be expected to be provided (e.g., 2A power output +/- 5%). Therefore, the display device 100 could be designed with components that consume the specified available power (e.g., about 2A), and be expected to work reliably.
However, in practice, video source devices 102 may perform out of this specified power capability range, particularly when the video source device 102 has other intermittent drains on its power, or if the video source device 102 is operating on battery power instead of from an external power source 104. If the display device 100 has been designed to require the majority of the specified available power for proper operation, then the display device 100 may experience intermittent failures (e.g., screen blanking, etc.) when the provided power intermittently drops outside of the expected range. At the same time, including additional
-3-features within the display device 100 and providing desirable functionality of the display device 100 (including, but not limited to, high levels of screen brightness) may require the majority of the specified available power to be provided. What is desired is a display device 100 that can provide desired functionality that requires high amounts of power, while still providing acceptable performance in situations where the amount of supplied power is less reliable.
FIGURE 2 is a block diagram that illustrates an example embodiment of a display device according to various aspects of the present disclosure. As illustrated, the display device 100 includes a screen 202, additional components 204, a power mode management circuit 210, a USB port 212, a video port 213, and a power mode switch 214.
The power mode management circuit 210 may be any type of circuit suitable for controlling the power consumption characteristics of the other components of the display device 100 as described below, hi some embodiments, the power mode .management circuit 210 may be implemented within a logic device such as a PLD, an ASIC, a FPGA, and/or the like. In other embodiments, the power mode management circuit 210 may be implemented within a computing device having at least one processor and a memory containing computer-executable instructions that, if executed by the at least one processor, cause the power mode management circuit 210 to perform the actions discussed below; a dedicated digital hardware device implemented, for example, as a state machine configured to perform the actions described; within an application specific processor;
and/or within any other suitable computing device.
The display device 100 uses the video port 213 to obtain information to be presented by the display device 100 and uses the USB port 212 to obtain power to operate the screen 202, the additional components 204, and any other components of the display .. device 100. By using a USB port 212 for power instead of a dedicated power supply port, the display device 100 may only need to be coupled to the video source device 102 in order to operate, thereby reducing the complexity of wiring the display device 100 and increasing usability of the display device 100 in a variety of scenarios.
FIGURE 2 is a block diagram that illustrates an example embodiment of a display device according to various aspects of the present disclosure. As illustrated, the display device 100 includes a screen 202, additional components 204, a power mode management circuit 210, a USB port 212, a video port 213, and a power mode switch 214.
The power mode management circuit 210 may be any type of circuit suitable for controlling the power consumption characteristics of the other components of the display device 100 as described below, hi some embodiments, the power mode .management circuit 210 may be implemented within a logic device such as a PLD, an ASIC, a FPGA, and/or the like. In other embodiments, the power mode management circuit 210 may be implemented within a computing device having at least one processor and a memory containing computer-executable instructions that, if executed by the at least one processor, cause the power mode management circuit 210 to perform the actions discussed below; a dedicated digital hardware device implemented, for example, as a state machine configured to perform the actions described; within an application specific processor;
and/or within any other suitable computing device.
The display device 100 uses the video port 213 to obtain information to be presented by the display device 100 and uses the USB port 212 to obtain power to operate the screen 202, the additional components 204, and any other components of the display .. device 100. By using a USB port 212 for power instead of a dedicated power supply port, the display device 100 may only need to be coupled to the video source device 102 in order to operate, thereby reducing the complexity of wiring the display device 100 and increasing usability of the display device 100 in a variety of scenarios.
-4-The USB port 212 is configured to receive power from an external source.
Typically, the USB port 212 may be coupled to the video source device 102 in order to obtain the benefits discussed above. In some embodiments, the USB port 212 may be coupled to a different device or a power source other than the video source device 102 in order to obtain power. Though a USB port 212 is primarily illustrated and described herein, in some embodiments, another type of communication port may be used to obtain power, including but not limited to a FireWire port, a Thunderbolt port, and an Ethernet port enabled to support power-over-Ethernet (PoE). Because the power consumption mode is determined based on a state of the power mode switch 214, the USB port 212 may or may not utilize complex power configuration functionality that may be provided by USB devices, such as support for USB
Power Delivery. In some embodiments, the USB port 212 may only receive power, and may not exchange data with the device to which it is connected. In some embodiments, the USB
port 212 may receive both power and data.
The video port 213 is configured to receive video information from the video source device 102 to be presented by the screen 202. In some embodiments, the video source device 102 may also provide other information to the display device 100, including but not limited to audio information. In some embodiments, the other information may also be provided via the video port 213. In some embodiments, the other information may be provided by a separate connection between the devices (not illustrated).
The power mode switch 214 may be any type of switch that can be actuated by a user and can provide an indication of its state to the power mode management circuit 210. Some non-limiting examples of devices suitable for use as the power mode switch 214 include physical switches such as a toggle switch, a push-button switch, a rocker switch, a touch switch, or a dial switch. In some embodiments, the power mode switch 214 may be a firmware setting which can be changed via a user interface provided by the display device 100.
In some embodiments, the power mode switch 214 may indicate a discrete value from a set of two or more possible values (e.g., on or off; 0 or 1; 0, 1, or 2). In some embodiments, the power mode switch 214 may be a potentiometer or other device that indicates a continuous
Typically, the USB port 212 may be coupled to the video source device 102 in order to obtain the benefits discussed above. In some embodiments, the USB port 212 may be coupled to a different device or a power source other than the video source device 102 in order to obtain power. Though a USB port 212 is primarily illustrated and described herein, in some embodiments, another type of communication port may be used to obtain power, including but not limited to a FireWire port, a Thunderbolt port, and an Ethernet port enabled to support power-over-Ethernet (PoE). Because the power consumption mode is determined based on a state of the power mode switch 214, the USB port 212 may or may not utilize complex power configuration functionality that may be provided by USB devices, such as support for USB
Power Delivery. In some embodiments, the USB port 212 may only receive power, and may not exchange data with the device to which it is connected. In some embodiments, the USB
port 212 may receive both power and data.
The video port 213 is configured to receive video information from the video source device 102 to be presented by the screen 202. In some embodiments, the video source device 102 may also provide other information to the display device 100, including but not limited to audio information. In some embodiments, the other information may also be provided via the video port 213. In some embodiments, the other information may be provided by a separate connection between the devices (not illustrated).
The power mode switch 214 may be any type of switch that can be actuated by a user and can provide an indication of its state to the power mode management circuit 210. Some non-limiting examples of devices suitable for use as the power mode switch 214 include physical switches such as a toggle switch, a push-button switch, a rocker switch, a touch switch, or a dial switch. In some embodiments, the power mode switch 214 may be a firmware setting which can be changed via a user interface provided by the display device 100.
In some embodiments, the power mode switch 214 may indicate a discrete value from a set of two or more possible values (e.g., on or off; 0 or 1; 0, 1, or 2). In some embodiments, the power mode switch 214 may be a potentiometer or other device that indicates a continuous
-5-value. In some embodiments, the power mode switch 214 may provide a different signal to the power mode management circuit 210 depending on the state of the power mode switch 214. For example, the power mode switch 214 may provide a signal via a first conductor when the power mode switch 214 is in a first state, and may provide a signal via a second conductor instead of the first conductor when the power mode switch 214 is in a second state. In some embodiments, the power mode switch 214 may include an electronic component that is configured to report the state of the power mode switch 214 upon being queried by the power mode management circuit 210.
In some embodiments, the screen 202 includes a flat-panel display screen such as a liquid crystal display (LCD) panel, a light-emitting diode (LED) panel, an E-LED panel, or the like. The screen 202 may also include other components known to one of ordinary skill in the art, including but not limited to a backlight, a controller device, and one or more control input devices for controlling settings of the screen such as brightness and contrast. The screen 202 is powered by power received via the USB port 212, and is communicatively coupled to the power mode management circuit 210 to receive commands regarding a power consumption mode.
The additional components 204 are one or more components of the display device other than the screen 202 that may consume power provided by the USB port 212, and that may be configured in either a high power consumption mode or a low power consumption mode. For example, the additional components 204 may include a speaker 208 and a storage device 206. The speaker 208 may be configured to present audio information received from the video source device 102, audio information stored on the storage device 206, audio information generated by a processor of the display device 100, or any other audio information. The storage device 206 may be a hard disk drive, a solid-state drive (SSD), an optical drive, a flash memory, a reader for accepting a removable computer-readable medium such as a USB storage device, or any other type of device for reading from and/or writing to a computer-readable medium. In some embodiments, the display device 100 may not include additional components 204. In some embodiments, other additional components 204 may be included along with, in addition to, or instead of the illustrated additional components 204.
In some embodiments, the screen 202 includes a flat-panel display screen such as a liquid crystal display (LCD) panel, a light-emitting diode (LED) panel, an E-LED panel, or the like. The screen 202 may also include other components known to one of ordinary skill in the art, including but not limited to a backlight, a controller device, and one or more control input devices for controlling settings of the screen such as brightness and contrast. The screen 202 is powered by power received via the USB port 212, and is communicatively coupled to the power mode management circuit 210 to receive commands regarding a power consumption mode.
The additional components 204 are one or more components of the display device other than the screen 202 that may consume power provided by the USB port 212, and that may be configured in either a high power consumption mode or a low power consumption mode. For example, the additional components 204 may include a speaker 208 and a storage device 206. The speaker 208 may be configured to present audio information received from the video source device 102, audio information stored on the storage device 206, audio information generated by a processor of the display device 100, or any other audio information. The storage device 206 may be a hard disk drive, a solid-state drive (SSD), an optical drive, a flash memory, a reader for accepting a removable computer-readable medium such as a USB storage device, or any other type of device for reading from and/or writing to a computer-readable medium. In some embodiments, the display device 100 may not include additional components 204. In some embodiments, other additional components 204 may be included along with, in addition to, or instead of the illustrated additional components 204.
-6-Some non-limiting examples of other additional components 204 may include a wireless network adapter, a wired network adapter, and a lighting device. In some embodiments, the display device 100 may also include further components that are not affected by the power mode management circuit 210, including but not limited to a headphone jack. As such .. components are known to one of ordinary skill in the art, these further components are not illustrated or described further herein.
FIGURES 3A-3B are a flowchart that illustrates an example embodiment of a method of controlling power consumption of components of a display device according to various aspects of the present disclosure. From a start block, the method 300 proceeds to block 302, where a power source is coupled to a USB port 212 of the display device 100, and the display device 100 is turned on. As discussed above, in some embodiments, the power source may be the video source device 102, while in some embodiments, the power source may be a separate power source from the video source device 102. At block 303, the display device 100 conducts a boot process. In some embodiments, the boot process may include actions known to one of skill in the art for establishing a connection between a display device and a video source device, including but not limited to exchanging EDID information, conducting a video protocol handshake, and so on.
The method 300 then proceeds through a continuation terminal ("terminal A") to block 304, where a power mode management circuit 210 of the display device 100 determines a state of a power mode switch 214 of the display device 100. In some embodiments, the state of the power mode switch 214 may be determined by the power mode management circuit 210 by determining which conductor of the power mode switch 214 is generating an electrical signal, by querying a processor or firmware associated with the power mode switch 214, or using any other suitable technique. In some embodiments, the state may be either a first state or a second state (e.g., the power mode switch 214 indicates an "on" value or an "off' value).
In some embodiments, the state may be a continuous value. In some embodiments, the state may be a discrete value selected from a group of more than two discrete values.
Next, at decision block 306, a determination is made regarding whether the state of the power mode switch 214 indicates that the display device 100 should operate in a high power
FIGURES 3A-3B are a flowchart that illustrates an example embodiment of a method of controlling power consumption of components of a display device according to various aspects of the present disclosure. From a start block, the method 300 proceeds to block 302, where a power source is coupled to a USB port 212 of the display device 100, and the display device 100 is turned on. As discussed above, in some embodiments, the power source may be the video source device 102, while in some embodiments, the power source may be a separate power source from the video source device 102. At block 303, the display device 100 conducts a boot process. In some embodiments, the boot process may include actions known to one of skill in the art for establishing a connection between a display device and a video source device, including but not limited to exchanging EDID information, conducting a video protocol handshake, and so on.
The method 300 then proceeds through a continuation terminal ("terminal A") to block 304, where a power mode management circuit 210 of the display device 100 determines a state of a power mode switch 214 of the display device 100. In some embodiments, the state of the power mode switch 214 may be determined by the power mode management circuit 210 by determining which conductor of the power mode switch 214 is generating an electrical signal, by querying a processor or firmware associated with the power mode switch 214, or using any other suitable technique. In some embodiments, the state may be either a first state or a second state (e.g., the power mode switch 214 indicates an "on" value or an "off' value).
In some embodiments, the state may be a continuous value. In some embodiments, the state may be a discrete value selected from a group of more than two discrete values.
Next, at decision block 306, a determination is made regarding whether the state of the power mode switch 214 indicates that the display device 100 should operate in a high power
-7-consumption mode or a low power consumption mode. In embodiments wherein the power mode switch 214 may only be in either a first state or a second state, the determination may be based on whether the power mode switch 214 is in the first state or the second state. In embodiments where the power mode switch 214 may be in one of more than two discrete states, the determination may be based on whether the power mode switch 214 is in a first state or is in another state that is not the first state. In embodiments where the power mode switch 214 indicates a continuous value, the determination may be based on a comparison of the continuous value to a predetermined threshold value. The characteristics of a "high power state" and a "low power state" will be discussed further below.
In response to determining that the display device 100 should operate in the high power consumption mode, the result of decision block 306 is YES, and the method 300 proceeds to block 308, where the power mode management circuit 210 configures a screen 202 of the display device 100 to operate in a high power consumption mode. In the high power consumption mode, no constraints are placed on the performance of the screen 202. For example, the screen 202 may be configured to operate at a maximum supported brightness level or a highest supported refresh rate, which would provide the largest possible power consumption. At block 310, the power mode management circuit 210 enables one or more additional components 204 of the display device 100. For example, the power mode management circuit 210 may provide power to the speaker 208. As another example, the power mode management circuit 210 may provide power to the storage device 206 and start an initialization process of the storage device 206. In some embodiments, the power mode management circuit 210 may also enable more additional components 204, if any are provided. The method 300 then proceeds to a continuation terminal ("terminal C").
Returning to decision block 306, in response to determining that the display device 100 should not operate in the high power state and instead should operate in the low power state, the result of decision block 306 is NO, and the method 300 proceeds to a continuation terminal ("terminal B"). From terminal B (FIGURE 3B), the method 300 proceeds to block 312, where the power mode management circuit 210 configures a screen 202 of the display device 100 to operate in a low power consumption mode. In some embodiments, the
In response to determining that the display device 100 should operate in the high power consumption mode, the result of decision block 306 is YES, and the method 300 proceeds to block 308, where the power mode management circuit 210 configures a screen 202 of the display device 100 to operate in a high power consumption mode. In the high power consumption mode, no constraints are placed on the performance of the screen 202. For example, the screen 202 may be configured to operate at a maximum supported brightness level or a highest supported refresh rate, which would provide the largest possible power consumption. At block 310, the power mode management circuit 210 enables one or more additional components 204 of the display device 100. For example, the power mode management circuit 210 may provide power to the speaker 208. As another example, the power mode management circuit 210 may provide power to the storage device 206 and start an initialization process of the storage device 206. In some embodiments, the power mode management circuit 210 may also enable more additional components 204, if any are provided. The method 300 then proceeds to a continuation terminal ("terminal C").
Returning to decision block 306, in response to determining that the display device 100 should not operate in the high power state and instead should operate in the low power state, the result of decision block 306 is NO, and the method 300 proceeds to a continuation terminal ("terminal B"). From terminal B (FIGURE 3B), the method 300 proceeds to block 312, where the power mode management circuit 210 configures a screen 202 of the display device 100 to operate in a low power consumption mode. In some embodiments, the
-8-low power consumption mode places a limit on the level of brightness at which the screen 202 may operate. For example, in the low power consumption mode, the screen 202 may only be allowed to operate at 50% of its maximum possible brightness. This may be implemented in any suitable way. For example, if a user has configured a brightness setting of the screen 202 to 100%, the low power consumption mode may change this setting to the maximum 50%
value. As another example, if the user has configured the brightness setting of the screen 202 to 100%, the low power consumption mode may scale this setting by a predetermined amount, such that the user may still see a "100%" value for the brightness setting, but that this setting may be scaled to 50% of the configured setting value when actually implemented by the screen 202. The 50% value for the low power consumption mode is an example only. In some embodiments, a larger or smaller predetermined brightness value may be used for the low power consumption mode. In some embodiments, the predetermined brightness value for the low power consumption mode may be configurable by the user. In some embodiments wherein the power mode switch 214 can indicate more than two discrete values, the predetermined brightness value may be selected from a plurality of maximum brightness settings that correspond to the states of the power mode switch 214. In some embodiments, the low power consumption mode may include lowering a maximum refresh rate for the screen 202.
At block 314, the power mode management circuit 210 disables one or more additional components 204 of the display device. For example, in some embodiments, the power mode management circuit 210 may turn off power to the speaker 208. As another example, in some embodiments, the power mode management circuit 210 may shut down and turn off power to the storage device 206. In some embodiments, if the power mode switch 214 can indicate more than two discrete values or can indicate a continuous value, then the power mode management circuit 214 may power down a subset of the additional components 204 based on the discrete value or continuous value presented by the power mode switch 214.
For example, a "medium" setting of the power mode switch 214 may cause the speaker 208 to be disabled but not the storage device 206, whereas a "low' setting of the power mode switch 214 may cause all of the additional components 204 to be disabled. In some embodiments, turning off
value. As another example, if the user has configured the brightness setting of the screen 202 to 100%, the low power consumption mode may scale this setting by a predetermined amount, such that the user may still see a "100%" value for the brightness setting, but that this setting may be scaled to 50% of the configured setting value when actually implemented by the screen 202. The 50% value for the low power consumption mode is an example only. In some embodiments, a larger or smaller predetermined brightness value may be used for the low power consumption mode. In some embodiments, the predetermined brightness value for the low power consumption mode may be configurable by the user. In some embodiments wherein the power mode switch 214 can indicate more than two discrete values, the predetermined brightness value may be selected from a plurality of maximum brightness settings that correspond to the states of the power mode switch 214. In some embodiments, the low power consumption mode may include lowering a maximum refresh rate for the screen 202.
At block 314, the power mode management circuit 210 disables one or more additional components 204 of the display device. For example, in some embodiments, the power mode management circuit 210 may turn off power to the speaker 208. As another example, in some embodiments, the power mode management circuit 210 may shut down and turn off power to the storage device 206. In some embodiments, if the power mode switch 214 can indicate more than two discrete values or can indicate a continuous value, then the power mode management circuit 214 may power down a subset of the additional components 204 based on the discrete value or continuous value presented by the power mode switch 214.
For example, a "medium" setting of the power mode switch 214 may cause the speaker 208 to be disabled but not the storage device 206, whereas a "low' setting of the power mode switch 214 may cause all of the additional components 204 to be disabled. In some embodiments, turning off
-9-power to the speaker 208 may not affect the operation of other audio components, such as a headphone jack.
The method 300 then proceeds through a continuation terminal ("terminal C") and then to block 316, where the power mode management circuit 210 monitors the state of the power mode switch 214. In some embodiments, the power mode switch 214 may cause an interrupt to be generated by the power mode management circuit 210 upon a change in state. In the absence of such an interrupt, the power mode management circuit 210 may periodically check the value of the signal generated by the power mode switch 214. At decision block 318, a determination is made regarding whether the state of the power mode switch 214 has changed.
In response to determining that the state of the power mode switch 214 has indeed changed, then the result of decision block 318 is YES, and the method 300 returns to terminal A.
Otherwise, in response to determining that the state of the power mode switch 214 has not changed, then the result of decision block 318 is NO, and the method 300 returns to block 316.
In some embodiments, the method 300 continues to loop until the display device 100 is powered off or is otherwise shut down.
While illustrative embodiments have been illustrated and described, it will be appreciated that various changes can be made therein without departing from the spirit and scope of the invention.
The method 300 then proceeds through a continuation terminal ("terminal C") and then to block 316, where the power mode management circuit 210 monitors the state of the power mode switch 214. In some embodiments, the power mode switch 214 may cause an interrupt to be generated by the power mode management circuit 210 upon a change in state. In the absence of such an interrupt, the power mode management circuit 210 may periodically check the value of the signal generated by the power mode switch 214. At decision block 318, a determination is made regarding whether the state of the power mode switch 214 has changed.
In response to determining that the state of the power mode switch 214 has indeed changed, then the result of decision block 318 is YES, and the method 300 returns to terminal A.
Otherwise, in response to determining that the state of the power mode switch 214 has not changed, then the result of decision block 318 is NO, and the method 300 returns to block 316.
In some embodiments, the method 300 continues to loop until the display device 100 is powered off or is otherwise shut down.
While illustrative embodiments have been illustrated and described, it will be appreciated that various changes can be made therein without departing from the spirit and scope of the invention.
-10-
Claims (20)
1. A display device, comprising:
a communications port configured to receive power from an external source;
a screen configured to receive power from the communications port;
a power mode management circuit; and a power mode switch configured to provide a signal to the power mode management circuit;
wherein the power mode management circuit is configured to:
in response to detecting that the signal indicates that the power mode switch is in a first state, cause the screen to enter a high power consumption mode; and in response to detecting that the signal indicates that the power mode switch is in a second state, cause the screen to enter a low power consumption mode.
a communications port configured to receive power from an external source;
a screen configured to receive power from the communications port;
a power mode management circuit; and a power mode switch configured to provide a signal to the power mode management circuit;
wherein the power mode management circuit is configured to:
in response to detecting that the signal indicates that the power mode switch is in a first state, cause the screen to enter a high power consumption mode; and in response to detecting that the signal indicates that the power mode switch is in a second state, cause the screen to enter a low power consumption mode.
2. The display device of Claim 1, wherein the high power consumption mode includes an unconstrained brightness level, and wherein the low power consumption mode includes a brightness level that is constrained to a predetermined maximum value.
3. The display device of Claim 1, further comprising one or more additional components configured to receive power from the communications port, wherein the power mode management circuit is further configured to:
in response to detecting that the signal indicates that the power mode switch is in the first state, activate the one or more additional components; and in response to detecting that the signal indicates that the power mode switch is in the second state, de-activate the one or more additional components.
in response to detecting that the signal indicates that the power mode switch is in the first state, activate the one or more additional components; and in response to detecting that the signal indicates that the power mode switch is in the second state, de-activate the one or more additional components.
4. The display device of Claim 3, wherein the one or more additional components include at least one of a loudspeaker and a storage device.
5. The display device of Claim 1, wherein the communications port is a universal serial bus (USB) port.
6. The display device of Claim 1, wherein the power mode switch is a physical switch that is a toggle switch, a push-button switch, a rocker switch, or a touch switch.
7. The display device of Claim 1, wherein the power mode management circuit is further configured to, in response to detecting a change in state of the signal, cause the display device to reboot.
8. A method of controlling power consumption of components of a display device, the method comprising:
determining, by a power mode management circuit, a state of a power mode switch of the display device;
in response to determining that the power mode switch is in a first state:
causing, by the power mode management circuit, a screen of the display device to operate in a high power consumption mode; and in response to determining that the power mode switch is in a second state:
causing, by the power mode management circuit, the screen to operate in a low power consumption mode.
determining, by a power mode management circuit, a state of a power mode switch of the display device;
in response to determining that the power mode switch is in a first state:
causing, by the power mode management circuit, a screen of the display device to operate in a high power consumption mode; and in response to determining that the power mode switch is in a second state:
causing, by the power mode management circuit, the screen to operate in a low power consumption mode.
9. The method of Claim 8, wherein causing the screen to operate in a high power consumption mode includes allowing the screen to operate at any brightness level.
10. The method of Claim 8, wherein causing the screen to operate in a low power consumption mode includes constraining a brightness level of the screen.
11. The method of Claim 10, wherein constraining the brightness level of the screen includes automatically lowering the brightness level of the screen to be below a predetermined maximum brightness value.
12. The method of Claim 10, wherein constraining the brightness level of the screen includes automatically scaling the brightness level of the screen.
13. The method of Claim 8, further comprising, in response to determining that the power mode switch is in the second state:
causing, by the power mode management circuit, one or more additional components of the display device to be deactivated.
causing, by the power mode management circuit, one or more additional components of the display device to be deactivated.
14. The method of Claim 13, wherein the one or more additional components include a speaker or a storage device.
15. A non-transitory computer-readable medium having computer-executable instructions stored thereon that, in response to execution by a power mode management circuit of a display device, cause the power mode management circuit to control power consumption of components of the display device by:
determining, by the power mode management circuit, a state of a power mode switch of the display device;
in response to determining that the power mode switch is in a first state:
causing, by the power mode management circuit, a screen of the display device to operate in a high power consumption mode; and in response to determining that the power mode switch is in a second state:
causing, by the power mode management circuit, the screen to operate in a low power consumption mode.
determining, by the power mode management circuit, a state of a power mode switch of the display device;
in response to determining that the power mode switch is in a first state:
causing, by the power mode management circuit, a screen of the display device to operate in a high power consumption mode; and in response to determining that the power mode switch is in a second state:
causing, by the power mode management circuit, the screen to operate in a low power consumption mode.
16. The computer-readable medium of Claim 15, wherein causing the screen to operate in a high power consumption mode includes allowing the screen to operate at any brightness level.
17. The computer-readable medium of Claim 15, wherein causing the screen to operate in a low power consumption mode includes constraining a brightness level of the screen.
18. The computer-readable medium of Claim 17, wherein constraining the brightness level of the screen includes automatically lowering the brightness level of the screen to be below a predetermined maximum brightness value.
19. The computer-readable medium of Claim 17, wherein constraining the brightness level of the screen includes automatically scaling the brightness level of the screen.
20. The computer-readable medium of Claim 15, further comprising, in response to determining that the power mode switch is in the second state:
causing, by the power mode management circuit, one or more additional components of the display device to be deactivated, wherein the one or more additional components include a speaker or a storage device.
causing, by the power mode management circuit, one or more additional components of the display device to be deactivated, wherein the one or more additional components include a speaker or a storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2986980A CA2986980A1 (en) | 2017-11-29 | 2017-11-29 | Display with low voltage feature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2986980A CA2986980A1 (en) | 2017-11-29 | 2017-11-29 | Display with low voltage feature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2986980A1 true CA2986980A1 (en) | 2019-05-29 |
Family
ID=66657475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2986980A Abandoned CA2986980A1 (en) | 2017-11-29 | 2017-11-29 | Display with low voltage feature |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2986980A1 (en) |
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